Pointwise characterization for combinations of Szász-Mirakjan operators

  • Lin-sen Xie
  • Zhong-rui Shi


The purpose of this paper is to characterize the pointwise rate of convergence for the combinations of Szász-Mirakjan operators using Ditzian-Totik modulus of smoothness.


Szász-Mirakjan operator combination pointwise approximation 

MR Subject Classification



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Copyright information

© Editorial Committee of Applied Mathematics-A Journal of Chinese Universities and Springer-Verlag GmbH 2008

Authors and Affiliations

  • Lin-sen Xie
    • 1
    • 2
  • Zhong-rui Shi
    • 1
  1. 1.Dept. of Math.Shanghai Univ.ShanghaiChina
  2. 2.Dept. of Math.Lishui Univ.LishuiChina

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